31013408 has 24 divisors (see below), whose sum is σ = 61292700. Its totient is φ = 15447040.

The previous prime is 31013401. The next prime is 31013417. The reversal of 31013408 is 80431013.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28858384 + 2155024 = 5372^2 + 1468^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31013408.

It is not an unprimeable number, because it can be changed into a prime (31013401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7268 + ... + 10716.

Almost surely, 2^31013408 is an apocalyptic number.

It is an amenable number.

31013408 is a deficient number, since it is larger than the sum of its proper divisors (30279292).

31013408 is a wasteful number, since it uses less digits than its factorization.

31013408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 31013408 is about 5568.9683066076. The cubic root of 31013408 is about 314.1833486378.

The spelling of 31013408 in words is "thirty-one million, thirteen thousand, four hundred eight".